✨(helm) add local prom and grafana

We add a local prometheus and grafana in order to be abble to have our
custom metrics and to manage our retention and to avoid collision with
other project / metrics

src/helm/env.d/dev/values.grafana.yaml.gotmpl

@@ -0,0 +1,48 @@
+rbac:
+  create: true
+  namespaced: true
+ingress:
+  enabled: true
+  hosts:
+    - grafana.127.0.0.1.nip.io
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+testFramework:
+  enabled: false
+persistence:
+  type: pvc
+  enabled: true
+  size: 10Gi
+adminUser: admin
+adminPassword: strongpassword
+datasources:
+  datasources.yaml:
+    apiVersion: 1
+    datasources:
+    - name: Prometheus
+      type: prometheus
+      url: http://prometheus-server
+      access: proxy
+      isDefault: true
+dashboardProviders:
+  dashboardproviders.yaml:
+    apiVersion: 1
+    providers:
+    - name: 'default'
+      orgId: 1
+      folder: ''
+      type: file
+      disableDeletion: false
+      editable: true
+      options:
+        path: /var/lib/grafana/dashboards/default
+dashboards:
+  default:
+    prometheus-2-stats:
+      url: https://raw.githubusercontent.com/grafana/grafana/main/public/app/plugins/datasource/prometheus/dashboards/prometheus_2_stats.json
+      datasource: Prometheus
+    grafana-metrics:
+      url: https://raw.githubusercontent.com/grafana/grafana/main/public/app/plugins/datasource/prometheus/dashboards/grafana_stats.json
+      datasource: Prometheus

src/helm/env.d/dev/values.prometheus.yaml.gotmpl

@@ -0,0 +1,68 @@
+rbac:
+  create: true
+
+server:
+  releaseNamespace: true
+  namespaces:
+    - {{ .Release.Namespace | quote }}
+  global:
+    ## How frequently to scrape targets by default
+    ##
+    scrape_interval: 1m
+    ## How long until a scrape request times out
+    ##
+    scrape_timeout: 10s
+    ## How frequently to evaluate rules
+    ##
+    evaluation_interval: 1m
+  persistentVolume:
+    enabled: true
+    size: 8Gi
+  resources: {}
+    # limits:
+    #   cpu: 500m
+    #   memory: 512Mi
+    # requests:
+    #   cpu: 500m
+    #   memory: 512Mi
+  retention: "2y"
+serverFiles:
+  prometheus.yml:
+    rule_files:
+      - /etc/config/recording_rules.yml
+      - /etc/config/alerting_rules.yml
+    ## Below two files are DEPRECATED will be removed from this default values file
+      - /etc/config/rules
+      - /etc/config/alerts
+
+    scrape_configs:
+      - job_name: prometheus
+        static_configs:
+          - targets:
+            - localhost:9090
+      - job_name: grafana
+        static_configs:
+          - targets:
+            - grafana:80
+
+alertmanager:
+  ## If false, alertmanager will not be installed
+  ##
+  enabled: true
+
+  persistence:
+    size: 2Gi
+
+  podSecurityContext:
+    runAsUser: 65534
+    runAsNonRoot: true
+    runAsGroup: 65534
+    fsGroup: 65534
+
+kube-state-metrics:
+  enabled: false
+
+prometheus-node-exporter:
+  enabled: false
+prometheus-pushgateway:
+  enabled: false

src/helm/helmfile.yaml

@@ -4,6 +4,10 @@ repositories:
   oci: true
 - name: livekit
   url: https://helm.livekit.io
+- name: prometheus-community
+  url: https://prometheus-community.github.io/helm-charts
+- name: grafana
+  url: https://grafana.github.io/helm-charts
 
 releases:
   - name: postgres
@@ -55,6 +59,20 @@ releases:
     secrets:
       - env.d/{{ .Environment.Name }}/secrets.enc.yaml
 
+  - name: prometheus
+    namespace: {{ .Namespace }}
+    version: 25.26.0
+    chart: prometheus-community/prometheus
+    values:
+      - env.d/{{ .Environment.Name }}/values.prometheus.yaml.gotmpl
+
+  - name: grafana
+    namespace: {{ .Namespace }}
+    version: 8.4.8
+    chart: grafana/grafana
+    values:
+      - env.d/{{ .Environment.Name }}/values.grafana.yaml.gotmpl
+
 environments:
   dev:
     values: